Week's scientific term:

Ex vivo

1. The Latin meaning of "ex vivo" is “out of the living”.
2. In biological science, ex vivo refers to experimentation or measurements done in or on living cell or tissue collected from an organism and cultured in a laboratory apparatus. For example, experiment that involves cell line (cell culture) or tissue cultures are ex vivo studies. HeLa(Henrietta Lacks) and CHO (Chinese hamster ovary) are eamaples of two cell lines, of which, the formar one originate with human and later one originate with animal.
3. Ex vivo should not be confused with the term “in vitro”. Usually, ex vivo describes the type of a study that involves living cell or tissue whereas “in vitro” used to indicate studies conducted in an artifical environment outside the cell or host. Commonly, ex vivo studies are usually performed in vitro.